Combined attachment-plug and base.



M. NORDEN.

COMBINED ATTACHMENT PLUG AND BASE.

APPLICATION FILED APR. 24, 1914.

1,143,306., Q Patented June 15, 1915.

/A/ VIEW TOR H18 Arm/Mrs MORTIMER NORDEN, OF NEW YORK, N. Y., ASSIGNOR TO JOSEPH NORDEN, OF NEW YORK, N. Y.

COMBINED ATTACHMENT-PLUG- AND BASE.

Specification of Letters Patent. Patented June 15, 1915.

Application filed April 24, 1914. Serial no. 834,064.

To all whom it may concern Be'it known that I, MORTIMER NoRDnN, a citizen of the United States, residing in the borough of Manhattan, in the city, county, and State 01'? New York, have invented an Improvement in Combined Attachment- Plugs and Bases, of which the following is a specification.

My invention relates to a combined electrical attachment lug and base and'is an improvement upon the device shown in my.

' wires in contact with the plates.

The details and operation of the invention are hereinafter particularly described.

In the accompanying drawing: Figure 1 is a plan View of my combined attachment plug and base connected together, in which the main conductor wires are shown in broken lines. Fig. 2 is a vertical section on the line .rm of Fig. 1, showing the plug and base attached to a connection box, and Fig. 3 is an inverted plan View of the com bincd base and plug, the branch conductor wires being in section.

Similar reference numerals indicate like parts throughout the scveral views.

The plug, 1 and its base 2 are both made of porcelain or other insulating material.

The base 2 is preferably of circular formation, having an integral angular flange 3, and a central openingt with op positely disposed recesses 5 for the reception of the plug 1 and its contact pieces;

6 ti are lugs of insulating material, preferably madc integral with the base, one of which lugs projects in line with the sidewall of one of the recesses 5 at its right hand side, while the other lug projects in line with the other recess 5 at its left hand side.

7 '7 are spring contact clips ofmetal located upon the top surface of the base 2, which clips are curved to conform to the shape of the base and the central opening therein. The free ends of these spring contact clips '7 are bent slightly upward for the purpose hereafter described.

-8 8 are metallic contact plates arranged adjacent to the respective lugs 6, and placed over and in contact with one end of each of the said spring contact clips 7. Screws 9 pass through holes in the base and clips and screw into screw threaded holes in the plates 8. i

10 Marc metallic binding screws screwing into screw threaded openings in the plates 8 and through openings in the clips 7 and into screw threaded openings in the base. These binding screws 10 are for' holding the main line wires 11 to the plates 8 on the base 2, the insulating material being re-v moved from said wires a short distance to allow the barcd portions of the wires to be I duced diameter 15 adapted to enter and fill the central opening 1, in the base 2. There is a central opening 16 extending entirely through the plug 1 through which pass the branch. conductor wires 17. On the top sur face of the plug 1 at opposite sides of the central opening therein, are. recesses 18 ex-, tending to the outer surface of the'neck, of the plug, and into these recesses are inserted metallic'contact plates '19, the endsof which adjacent the central opening areslightly upturned. These contact plates 19 extend a predetermined distance 'at right angles beyond opposite sides of the neck of the plug. The'bottom of the plug is preterably provided with a recess 20 and on opposite sides of the central opening through the plug and in line'with the recesses therein longitudinal bores 21 are made, extending entirely through the plug, the lower part of such bores having a squared portion The contact plates 19-are provided with holes registering with the bores 21, and into bolts 23 are provided ii'vith' a' transverse passin i: with thefl ilates I9.

screw driver.

such holes and through the bores 21 there are inserted" headed 7bolts"2323,-f provided p "oflsai'd plugonfopposite sides'iof the central ,on'their lower ends withasorew thread. opening extending at right angles thereto 24 24 indicate nuts into which-'thescrew and projecting a predetermined distance bethreaded ends these,, bolts @Bgganescrewed, yondthe plug; 'eachLconta'ct plate'hav'ing an the nuts 24: being within the squared por-"' opening registeringwith said bores, headed tions 22 of the bores 21. The heads of the bolts having J screw threaded lower ends through" said openings and through notch or groove for manipulation with-a said bores, nuts into whichthe screw thread- -H 1 led ends of the bolts are screwed; branch The insulating material removed-from wires clamped between the heads'of said the ends of the branch conductor wires 17 bolts and said contact plates, in combination wh ch Pro e -b yo the tepit eiph s 1, with a base of insulatingmaterial having I I and tli'e bared wiiges aregtwistediaround the openings-forthe passage of said plug and bolts Eli/under, vtheir heads and when theright'angled-contachplates, metallic'plates bolts ar'ejtightened inti ateicontac t is made -isecuredto said base for connection with an c electric main, metallic spring clipslin con 'In connecting the 1 2, tactwith said plates and securedto'the base jthe pr ojecting endsofthe contact p lates l9 and positioned to overlie and contact with base, (thecontactzplates, 19, at. the same time and base.

are-brought in line with the-recesses iinlh'e the projecting ends of said right angled conbase, and the neck 15 of the plug jsdli 'nwtact plates on'a partial rotationoftheplug pushed into the central opening 4,111 the v, and securesaidv pro'ections between theclips passinginto saidrecesses 5)., until that ;po r- (2. 'A 'plug of material having a tionofthe plug having, the larger diameter:;,r,ecessedbottom, a central 'openingextend- 1'1 comes into contact, with the bot-tom. of theqgin g entirely through the plug for the recep base and prevents the further entrance of 5 I "thel'plugand in 'thisposition .theextendedtheba se, Now by giving the. plug aparo tialo; rotation toth'e i lght, the contact. plates,

v tio n ofconductor wlres, recesses inthe top :surtace rot the plug at opposite sides of said opening, contact platesupon the upper end ends; of the contact plates; 19.; have [passed opening and extendingto the-outer surface.

of the plug, entirelv through theplug on op osite sides ofwsaidfl central. opening, '-the; owe'rnpart entirely through and out of the recesses 5.

' 1 "1 9 will pass under tl' egspriug contactclips 7 of each bore being; gsquare contact plates and its base. The-bent f trated th-device'as attached toa connection,

the contact plates 1.9, securely within the recesses 18 in theto p o'f theiplug and,

and remain in intimate frictional contact seated;-in said [recesses upon the}. upper end therewith, thus forming both mechanical ottlre plug-and extending atrightz'angles andelectricalconnection between the plug ,thereto'and projectin a predetermined disup ends of they clips .tancesbeyonclathe plug each contact plate f the r ta t :havingan opening \registering' -with said Itwill beseen bores, headed-bolts having,screwithreaded plug being ro-v lower ends passing'througl .,-saidopenings i and through: said-bores nuts-within-said In FigQZ of the drawing, I have illussquareportions of said bores intoqqnhichmhe screw threaded ends 1 of I the bol-ts are box, but it isiobsioustliat'f the base may be- Lscrewed; branch wires clamped-between the secured-to any suitable supportu H v A It will b "seen that the bolts 23 serve to a .in. combination with abase of insulating 'material having openingsfon the passage of .said plug and right angled contaet= plates,

7 assuring the free, passage that the lugs" 6 I prevent the also formfa meansof bindingthebaled/ends inctallicplates secured-to said base'forzconof'the branch conductor wires 17 tothecon-H nectionl with an electric main, qnetallic tact plates 19. The nuts24.beingwithinvthe spring :clipsin contact with said-plates and squared lower portions of thebores 2l are] prevented from turning whereby theqbolts.

l "may be roadily manipulated for; releasing or as I claim as my. invention: I

central opening extending entirely through .longit'udinal bore extending entirely through securled' to the base and-positioned toove'rlie and contact with-the projecting ends ofisaid right.angled contact plateson a; partialrobinding the 'bared ends of the branchwclon-u station/of the plug and sccure saidprojecv I tions between the clips and base. 1

V Signed by me this 8thdayo=oztiDecemben 1Q Aplugof insulafhigmaterial having a .1913.

' MORTIMER NQRDEN.

In the presence ofr J h Bnn'rrm M. ALLEN, ll/[ARIE D. Wonnnns.

ductor wires.

it for the reception of conductor wires, a

the plug on opposite sides ofsaid central a longitudinal bore extending heads of said bolts and said contact-plates, v 

